Hi Greg,
I got another photo from a member of my LUG showing a detail of middle rib, which confirms that the stiffener is a bit lower than stud4 and plate border.
I got another photo from a member of my LUG showing a detail of middle rib, which confirms that the stiffener is a bit lower than stud4 and plate border.
![[Image: u547.jpg]](http://www.brickshelf.com/gallery/Philo/Misc/u547.jpg)